The prevalence and adjusted rate of Mental Retardation(M. R.) were 2.70% and 2.68% in the Qin-Ba Mountain Area in South-Shaanxi; 2.78% and 2.80% in childhood respectivety. These rates were all higher than overall rates in Shaanxi and in It is obvious that the prevalence of M. R. could be reduced by the social-environmental factors such as natural geographic situation, social development level, mean income per capita, mother's schooling, the family relationship with stepmother/stepfather, etc. Reducing prevalence rate of M. R., we need to take the multiple measures and services. It may help the reduction of M. R. prevalence and it is very important to continuously supply iodine salt in these area.

Adult ; Brugada Syndrome ; complications ; physiopathology ; Bundle-Branch Block ; Electrocardiography ; Humans ; Male

Ohjective To study the indications,clinical effect and complications of hysterectomy so as to im- prove therapeutic effect.Methods The clinical data involving 320 cases of hysterectomy in this hospital from 2000 to 2006 were reviewed,and the pathogenesis,operation mode,curative effect and post-operation complications were analysed.Results Patients who received hysterectomy due to benign gynecologic diseases were cured well cliniclly; those who received hysterectomy due to malignant gynecologic diseases or diseases with the tendency of malignant change were cured well in early stage but the effect was not so satisfactory in later stage.The operation mode was de- cided by considering the pathogenesis and individual difference.Conclusion For benign gynecologic diseases,hys- terectomy can be conducted with good effect after conservative treatment becomes ineffective.For malignant gyneco logic diseases,early treatment will bring good resuh,while late treatment will generate not so satisfactory effect.Indi- cations for operation should be controlled strictly for hysterectomy to guard against complications.

Objective To study the effect of chitosan on the growth of the in vitro cultured retinal nerve cells. Methods The retinal nerve cells of SD baby rats were cultured in vitro. The effects of chitosan at 0.065%,1.25%,2.5%,5%,10%,15% on the growth of the retinal nerve cells were measured by MTT method. The blank control group was created. Results 1.25%,2.5%,5%,and 10% chitosan could obviously promote the growth of retinal nerve cells,and 10% chitosan was the optimal concentration for the growth of nerve cells. Conclusion Chitosan can effectively promote the growth of retinal nerve cells,and it is necessary to undertake the further study of Chitosan.

Objective To evaluate the effiicacy of nasotracheal intubation using blind tracheal intubation device and end-tidal carbon dioxide monitoring technique in patients with difficult airway.Methods Sixty ASA Ⅰ or Ⅱ patients of both sexes,aged 35-60 yr,weighing 55-75 kg,requiring nasotracheal intubation,undergoing selective oral and maxillofacial surgery,were involoved in this study.All of them were expected to have difficuh airway such as mouth opening ＜ 3 cm,neck upward degree ＜ 30° and Mallampati classification Ⅲ or Ⅳ,The patients were randomly divided into 2 groups(n =30):group Ⅰ received tracheal intubation with the blind tracheal intubation device and group H received tracheal intubation with the blind intubation device combined with end-tidal carbon dioxide monitoring technique.The number of successful intubation,the inlubation time and adverse effects during intubation(epistaxis,tachycardia,hypertension and hypoxemia)and after operation(sore throat and hoarseness)were recorded.Results The rate of successful intubation in the two groups was 100％.Tachycardia,hypertension,hypoxemia and hoarseness were not found in the two groups.Compared with group I,the rate of successful intubation at first attempt was significantly increased,the intubation time was significantly shortened,and the incidence of epistaxis and sore throat was decreased in group Ⅱ(P ＜ 0.05).Conclusion The blind intubation device combined with end-tidal carbon dioxide monitoring technique used in diffficult airway can shorten the intubation time,increase the success rate of tracheal intubation,and decrease the occurrence of adverse effects.

Objective To evaluate the prevalence of aspirin resistance in old-aged patients with cerebral infarction and to analyze the mechanisms and clinical predictors of aspirin resistance. Methods 300 old-aged patients with cerebra] infarction were selected and the platelet aggregation ratio was determined by nephelometry with CHRONO-LOG PA-meter. And some information of these patients, such as age, sex, smoking, taking non-steroid anti-inflammatory drug (NSAD)or proton pump inhibitor (PPI), obesity, coronary artery disease (CAD), peripheral vascular disease, hyperpiesia, diabetes and hyperlipemia were recorded. Results 112 cases (37.33%) were aspirin sensitiveness, 108 cases(36.0%) were aspirin semi-resistance and 80 cases (26.67%) were aspirin resistance. These cases were divided into two groups. One was aspirin sensitive (AS) group, which included 112 patients of aspirin sensitiveness. The other was aspirin resistant (AR) group, which consisted of 188 patients of aspirin semi-resistance and aspirin resistance. The prevalence of CAD, hypercho]esteremia and RBC count in AR group was higher than that in AS group The percentage of patients who took NSAD, PPI and smoke in AR group was also higher than that in AS group. Conclusion Aspirin resistance existed in old-aged patients with cerebral infarction to great extent, and which was correlated with CAD, hypercholesteremia, smoking, RBC count, taking NSAD and PPI.

Objective To explore the clinical significance of gastric hyperplastic polyp pits under magnifying endoscopy. Methods Summary confirmed by magnifying endoscopy and pathological examination gastric hyperplastic po]yp's performance of magnifying endoscopy,Hp positive and the results of pathology during February 2004 to De-cember 2006. Results 55 patients found 116 gastric polyp,41.4% (48/116) with type A,26.7% (31/116) with type B,19. 8% (23/116) with type C,8. 6% (10/116) with type D,2. 6% (3/116) with type E,one case gastric pits blurred(type F) 0. 9% (1/116). 4 cases with type E and type F found moderate-severe atypical hyperplasia. Conclu-sion Gastric hyperplastic polyp pits with type E and type F ,their results of pathology to display atypical hyperplasia.

Objective:To compare the preventive effects of dezocine or parecoxib used alone or combination on emergence pain and agitation in the patients undergoing radical hysterectomy. Methods: Sixty ASA Ⅰ~Ⅱ patients undergoing radical hysterectomy were randomly divided into three groups. At the time of sewing incision, the dezocine group (group D, n=20) received dezocine in-travenous injection at the dosage of 0. 1 mg·kg-1, the parecoxib group (group P, n=20) received parecoxib intravenous injection at the dosage of 0.8 mg·kg-1, and the combination group (group DP, n=20) received 0.1 mg·kg-1dezocine and 0.8 mg·kg-1 parecoxib. When the operation was finished, the patients were transferred to the recovery room with endotracheal tubes, and recovered and extubated without the administration of reversal agents. Visual analogue scale ( VAS) for pain and Aono' s four-point scale for e-mergence agitation ( EA) were measured. The recovery time, extubation time, VAS, degree of EA and side effects such as nausea, vomiting, respiratory depression and hypersomnia during the emergence were also evaluated and recorded. Results:There were no sig-nificant differences in recovery time and extubation time among the three groups (P >0. 05). The VAS score and degree of EA in group DP were lower than that in group D (4. 65 ± 1. 69) and group P (5. 95 ± 1. 82) (P<0. 05), and the VAS score in group D was lower than that in group P (P<0. 05). The incidence of moderate and severe pain during the emergence in group DP (20%) was low-er than that in group D and group P (75% and 85%, respectively, P<0. 05), and that was lower in group D when compared with that in group P(P<0. 05). There were no significant differences in the incidence of degree of EA higher than 3 among the three groups (P>0. 05), and no side effects such as nausea, vomiting, respiratory depression and hypersomnia were detected during the emergence. Conclusion:Intravenous injection of 0. 1 mg·kg-1 dezocine combined with 0. 8 mg·kg-1 parecoxib at the time of sewing incision shows effective analgesia and emergence agitation reduction without obvious complications in the patients undergoing radical hysterecto-my.

Objective:To explore and observe therapeutic effect of nursing exercise rehabilitation on home patients with chronic heart disease (CHF) .Methods :A total of 122 CHF patients ,who performed home‐rehabilitation in community from Jan 2012 to Feb 2015 ,were selected .According to sealed envelope extraction method ,patients were randomly and equally divided into routine nursing group (received routine nursing intervention ) and exercise intervention group (received early exercise intervention based on routine nursing group ) ,the intervention period was eight weeks for both groups .The 6min walking distance (6MWD) ,left ventricular ejection fraction (LVEF) ,scores of Minnesota living with heart failure questionnaire (MLHFQ) and self‐behavior management scale were measured and compared between two groups before and after nursing .Results:Compared with before nursing ,after nursing , there were significant rise in 6MWD ,LVEF and score of self‐behavior management in both groups , P<0.01 all . Compared with routine nursing group after nursing ,there were significant rise in 6MWD [ (482.44 ± 65.29) m vs . (546.24 ± 76.13) m] ,LVEF [ (35.69 ± 7.22)% vs .(38.83 ± 6.92)% ] and score of self‐behavior management [(89.19 ± 25.14) scores vs .(103.49 ± 22.44) scores] ,significant reductions in physical [(62.12 ± 17.97) scores vs . (42.32 ± 17.67) scores] ,emotional [ (67.76 ± 17.17) scores vs .(51.32 ± 16.41) scores] and social dimension score [ (72.43 ± 10.31) scores vs .(62.44 ± 10.45) scores] of MLHFQ in exercise intervention group ,P<0.01 all .Con‐clusion:Nursing exercise can significantly enhance heart function and athletic ability ,improve self‐care capacity , help to improve quality of life in home patients with chronic heart failure .

Objective To observe the relation between functions of vessels of lower extremities and TCM syndromes differentiation in diabetes patients. Methods Totally 168 diabetics of Type II were differentiated into 5 syndromes, i.e. 29 cases of yin deficiency with excessive heat, 41 cases of qi and yin deficiency, 30 cases of yin and yang deficiency, 37 cases of blood stasis in channels, and 31 cases of damp heat affecting the spleen, and 26 healthy people were involved in the control group. The peripheral vessel diagnostic system was adopted to get the toe photoplethysmogram (PPG) and ankle brachial index (ABI) to observe the blood perfusion of limb terminals and the functional state of lower limb arteries. The relation between function of vessels of lower extremities and TCM syndrome was analyzed. Results All the diabetic groups were related with the arterial blood supply of toe terminals. Diabetes was the main risk factor in affecting the terminal blood supply (P